16939279 has 8 divisors (see below), whose sum is σ = 20378240. Its totient is φ = 13755096.

The previous prime is 16939271. The next prime is 16939283. The reversal of 16939279 is 97293961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16939279 - 2³ = 16939271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16939271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63549 + ... + 63814.

It is an arithmetic number, because the mean of its divisors is an integer number (2547280).

Almost surely, 2^16939279 is an apocalyptic number.

16939279 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

16939279 is a deficient number, since it is larger than the sum of its proper divisors (3438961).

16939279 is a wasteful number, since it uses less digits than its factorization.

16939279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127389.

The product of its digits is 183708, while the sum is 46.

The square root of 16939279 is about 4115.7355357214. The cubic root of 16939279 is about 256.8216550467.

The spelling of 16939279 in words is "sixteen million, nine hundred thirty-nine thousand, two hundred seventy-nine".